Abstract: Ceramic igniters are provided that comprise at least three zones of differing electrical resistance, preferably in sequence a first conductive zone of relatively low resistance, a power booster or enhancement zone of intermediate resistance, and a further hot or ignition zone of high resistance. Igniters of the invention can provide extremely high speeds (low time-to-temperature).

Abstract: New ceramic resistive igniter elements are provided that comprise one or more portions provided with one or more surface patterns to thereby modify the electrical pathway and, further, modify the resistance in the one or more portions. New methods for fabricating resistive igniter elements are also provided wherein one or more surface patterns are provided, for example post densification, wherein the surface pattern(s) modify the electrical pathway through the elements as compared with the electrical pathway prior to disposition of the surface pattern(s). In particular, one or more interruptions are provided in the electrical pathway of an element such that the electrical pathway is modified and, further the resistance through the element is modified.

Abstract: A ceramic material formed from a mixture including between about 50 wt % and about 85 wt % of a first zirconia-based material comprising between about 2 mol % and about 6 mol % yttria and between about 5 wt % and about 50 wt % of a second zirconia-based material comprising not greater than about 1 mol % yttria. The mixture can further include between about 1 wt % and about 10 wt % of an alumina material.

Abstract: Ceramic igniters are provided that comprise at least three zones of differing electrical resistance, preferably in sequence a first conductive zone of relatively low resistance, a power booster or enhancement zone of intermediate resistance, and a further hot or ignition zone of high resistance. Igniters of the invention can provide extremely high speeds (low time-to-temperature).

Abstract: New methods are provided for manufacture ceramic elements that include injection molding of two, three or more distinct ceramic layers or regions that form the element. Ceramic elements also are provided that are obtainable from fabrication methods of the invention.

Abstract: The invention provides new methods for manufacture ceramic resistive heating elements that include forming a heating element body comprising comprises two or more regions of differing resistivity, and processing a portion of the element body to form a heating element. Heating elements such as igniters and glow plugs also are provided obtainable from fabrication methods of the invention.

Abstract: Ceramic igniters are provided that comprise at least three zones of differing electrical resistance, preferably in sequence a first conductive zone of relatively low resistance, a power booster or enhancement zone of intermediate resistance, and a further hot or ignition zone of high resistance. Igniters of the invention can provide extremely high speeds (low time-to-temperature).

Abstract: In one aspect, ceramic resistive heating elements are provided that comprise three or more electrically segregated conductive zones. In another aspect, ceramic heating elements are provided that comprise a plurality of conductive zones, wherein only a portion of the conductive zones pass current during use of the heating element. In a further aspect, heating elements of the invention can be readily modified to operate at a variety of voltages. The multiple conductive zones can provide extended heating element operating lifetimes.

Abstract: Ceramic igniter compositions are provided that contain components of conductive material and insulating material, where the insulating material component includes a relatively high concentration of metal oxide. Ceramic igniters of the invention are particularly effective for high voltage use, including throughout the range of from about 187 to 264 volts.

Abstract: New methods are provided or manufacture ceramic resistive igniter elements that include extrusion of one or more layers of the formed element. Ceramic igniters also are provided that are obtainable from fabrication methods of the invention.

Abstract: A particulate filter for purifying exhaust gases of an internal combustion engine, in particular of a diesel engine, comprises a filtering body and heating elements for initiating combustion of soot particles accumulated on and in the filtering body. The heating elements comprise at least a hot spot ceramic ignitor (3). The invention is applicable in the automotive industry.

Abstract: A particulate filter for purifying exhaust gases of an internal combustion engine, in particular of a diesel engine, comprises a filtering body and heating elements for initiating combustion of soot particles accumulated on and in the filtering body. The heating elements comprise at least a hot spot ceramic ignitor (3). The invention is applicable in the automotive industry.

Abstract: Ceramic igniter compositions are provided that contain components of conductive material and insulating material, where the insulating material component includes a relatively high concentration of metal oxide. Ceramic igniters of the invention are particularly effective for high voltage use, including throughout the range of from about 187 to 264 volts.

Abstract: Ceramic igniter compositions are provided that contain components of conductive material and insulating material, where the insulating material component includes a relatively high concentration of metal oxide. Ceramic igniters of the invention are particularly effective for high voltage use, including throughout the range of from about 187 to 264 volts.

Abstract: This invention relates to an aging resistant SiC igniter having a second layer of recrystallized SiC within the body.

Abstract: The present invention relates to ceramic igniter devices, and more particularly, to such devices that contain two or more segregated hot zone regions that are electrically connected such as in series or in parallel. These devices are suitably incorporated in a variety of devices, including diesel fuel filters.

Abstract: Ceramic igniters are provided that comprise at least three zones of differing electrical resistance, preferably in sequence a first conductive zone of relatively low resistance, a power booster or enhancement zone of intermediate resistance, and a further hot or ignition zone of high resistance. Igniters of the invention can provide extremely high speeds (low time-to-temperature).

Abstract: The present invention relates to ceramic igniter devices, and more particularly, to such devices that contain two or more segregated hot zone regions that are electrically connected such as in series or in parallel. These devices are suitably incorporated in a variety of devices, including diesel fuel filters.

Abstract: This invention relates to an aging resistant SiC igniter having a second layer of recrystallized SiC within the body.

Abstract: This invention relates to an aging resistant SiC igniter having a second layer of recrystallized SiC within the body.